338bc3ce42
The framework/ssh.go code was heavily used throughout the framework and could be useful elsewhere but reusing those methods requires importing all of the framework. Extracting these methods to their own package for reuse. Only a few methods had to be copied into this package from the rest of the framework to avoid an import cycle.
89 lines
3.1 KiB
Go
89 lines
3.1 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package framework
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import (
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"bufio"
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"fmt"
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"strings"
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e2essh "k8s.io/kubernetes/test/e2e/framework/ssh"
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)
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// KubemarkResourceUsage is a struct for tracking the resource usage of kubemark.
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type KubemarkResourceUsage struct {
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Name string
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MemoryWorkingSetInBytes uint64
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CPUUsageInCores float64
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}
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func getMasterUsageByPrefix(prefix string) (string, error) {
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sshResult, err := e2essh.SSH(fmt.Sprintf("ps ax -o %%cpu,rss,command | tail -n +2 | grep %v | sed 's/\\s+/ /g'", prefix), GetMasterHost()+":22", TestContext.Provider)
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if err != nil {
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return "", err
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}
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return sshResult.Stdout, nil
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}
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// GetKubemarkMasterComponentsResourceUsage returns the resource usage of kubemark which contains multiple combinations of cpu and memory usage for each pod name.
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// TODO: figure out how to move this to kubemark directory (need to factor test SSH out of e2e framework)
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func GetKubemarkMasterComponentsResourceUsage() map[string]*KubemarkResourceUsage {
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result := make(map[string]*KubemarkResourceUsage)
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// Get kubernetes component resource usage
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sshResult, err := getMasterUsageByPrefix("kube")
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if err != nil {
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Logf("Error when trying to SSH to master machine. Skipping probe. %v", err)
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return nil
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}
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scanner := bufio.NewScanner(strings.NewReader(sshResult))
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for scanner.Scan() {
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var cpu float64
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var mem uint64
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var name string
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fmt.Sscanf(strings.TrimSpace(scanner.Text()), "%f %d /usr/local/bin/kube-%s", &cpu, &mem, &name)
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if name != "" {
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// Gatherer expects pod_name/container_name format
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fullName := name + "/" + name
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result[fullName] = &KubemarkResourceUsage{Name: fullName, MemoryWorkingSetInBytes: mem * 1024, CPUUsageInCores: cpu / 100}
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}
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}
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// Get etcd resource usage
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sshResult, err = getMasterUsageByPrefix("bin/etcd")
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if err != nil {
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Logf("Error when trying to SSH to master machine. Skipping probe")
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return nil
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}
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scanner = bufio.NewScanner(strings.NewReader(sshResult))
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for scanner.Scan() {
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var cpu float64
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var mem uint64
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var etcdKind string
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fmt.Sscanf(strings.TrimSpace(scanner.Text()), "%f %d /bin/sh -c /usr/local/bin/etcd", &cpu, &mem)
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dataDirStart := strings.Index(scanner.Text(), "--data-dir")
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if dataDirStart < 0 {
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continue
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}
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fmt.Sscanf(scanner.Text()[dataDirStart:], "--data-dir=/var/%s", &etcdKind)
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if etcdKind != "" {
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// Gatherer expects pod_name/container_name format
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fullName := "etcd/" + etcdKind
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result[fullName] = &KubemarkResourceUsage{Name: fullName, MemoryWorkingSetInBytes: mem * 1024, CPUUsageInCores: cpu / 100}
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}
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}
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return result
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}
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